伤寒、副伤寒是贵州省重点控制的急性传染病 ,发病数和发病率多年来居全国首位 ,发病点多面广 ,爆发疫情时有发生 ,严重影响人民群众健康。特别在贫困地区 ,很多人因病致贫 ,因病返贫 ,严重制约了当地经济的发展。近年来甲型副伤寒 (简称副甲 )病例增多 ,出现多起爆发流行 ,病 Typhoid fever and paratyphoid fever are the key infectious diseases under the control of Guizhou Province. The number and incidence of this disease are among the highest in the country over the years. Their incidence is wide and varied. Occurrences of outbreaks have occurred, seriously affecting the health of the people. Especially in the poverty-stricken areas, many people become sick due to illness and return to poverty because of illness, seriously restricting the development of the local economy. In recent years, a case of paratyphoid fever (hereinafter referred to as vice) increased, there were more outbreaks epidemic, disease